hemisphere (redirected from Hemispheres)

hemisphere

1. one half of a sphere

2. 

a. half of the terrestrial globe, divided into northern and southern hemispheres by the equator or into eastern and western hemispheres by some meridians, usually 0° and 180°

b. a map or projection of one of the hemispheres

3. either of the two halves of the celestial sphere that lie north or south of the celestial equator

4. Anatomy short for cerebral hemisphere

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hemisphere [′he·mē‚sfir]

(geography)

A half of the earth divided into north and south sections by the equator, or into an east section containing Europe, Asia, and Africa, and a west section containing the Americas.

(mathematics)

One of the two pieces of a sphere divided by a great circle.